Sheet-metal sap receptacle or vessel.



No. 857,846. PATENTED JUNE 25, 1907. G. STOLLBERG.

SHEET METAL SAP REGEPTAGLE 0R VESSEL.

APPLICATION FILED FEB. a, 1907.

UNITED STATES PATENT orrron.

CHARLES STOLLBERG, OF TOLEDO, OHIO, ASSIGNOR TO AMERICAN CAN COMPANY, OF NEW'YORK, N. Y., A CORPORATION OF NEW JERSEY.

SHEET-METAL SAP RECEPTACLE OR VESSSELu Specification of Letters Patent.

- Patented June 25, 1907.

Application filed February 8 1907. Serial lilo. 356,296-

in the construction of one piece sheet metal receptacles of rectangular form commonly used for collecting sap and other purposes, and which are made with integral bottom,

. sides and ends from a single sheet metal blank by forming suitable folds thereon. Ileretofore such one piece receptacles have usually been made by providing the blank at each end'at the middle part thereon with outwardly projecting tongues or lips which are turned or folded outwardly over the upper edges of the end walls'of the receptacle to lock or bind together the angle folds of the blank at the ends of the receptacle, and as a consequence, there is considerable waste of stock as these projecting lips or tongues materially increase the length of the blank and the amount of the stock of sheet metal required to cut or form it.

The object of my invention is to provide an improved construction by which the waste of stock may be obviated and the one piece receptacle formed of minimum amount of stock.

My invention consists in the means I employ to practically accomplish this objectv or result as herein shown and described and more particularly pointed out in the claims.

In the accompanying drawing forming a part of this specification, Figure l is a front elevation showing perspectively a sheet metal sap receptacle embodying my invention. Fig. 2 is a central vertical cross section. Fig. 3 is a central vertical longitudinal section. Fig. 4 is an end view. Fig. 5 is a plan view of the sheet metal blank in the flat showing in dotted lines the angles or lines upon which the folds are made to form the receptacle from the flat blank, andalso show ing in. broken lines surrounding the blank the form and size of the blank heretofore employed in making the same sized receptacles in the old way and thus the relative amount of stock saved by my invention. Fig. 6 is a plan view showing one end portion of the blank partially formed or folded as it appears after the first step of the operation of folding or forming it into the receptacle shown in Figs. 1 to 4.

In the drawing, A represents a sap bearing tree, B a sheet metal apron inserted in the cut a of the tree.

D is the one piece sheet metal receptacle embodying my invention, the same comprising a bottom (1, upright sides d and flaring ends (P, the latter having angle folds d d, one overlapping the other at the upper part thereof, clamped or heldin place by the integral locking lips (I on the outer angle fold d which lips are folded or turned inward over the upper edge of the flaring ends (1 All these parts of the receptacle D are integral with each other and formed from a single flat sheet metal blank D by forming suitable bends or folds therein. The bends d surround the bottom d, the bends d are at the upwardly extending edges of the flaring ends d The angle folds d d overlap each other at the flaring ends d of the receptacle, and are held or locked in place by the integral locking lips d which are formed at the corner portions of the blank D out of stock that would otherwise be cut away as waste, as will be readily understood from Fig. 5 of the drawing. By thus forming the clinging or looking lips d at the upper edge of one member of the angle folds (1" so that said lips come at the corner portions of the blank D instead of at the ends thereof as shown by the outer broken line D representing the blank heretofore used in the old. way, I make a material saving in the amount of stock required to produce the receptacle D.

To stiffen and strengthen the integral upright sides d of the receptacle at the upper edges thereof, the same are preferably provided with integral rolls or curves d (15", one of which is preferably turned inward to form a hook edge to engage the downwardly and upwardly turned supporting hook or edge I) the angle folds having integral locking lips at the lower longitudinal edge of the apron B. turned over the upper edge of the receptacle, 10 The sheet metal apron B preferably has at its substantially as specified.

ends upturned flanges b and a concavely 2 CHARLES STOLLBERG. 5 curved upper edge 6 I claim Witnesses: A one piece sheet metal receptacle having PEARL ABRAMs,

integral bottom sides, ends and angle folds, EDMUND ADAMS. 

